#include <stdio.h>
#define TWO 2
#define OW "Consistency is the last refuge of the unimagina\
tive. - Oscar Wilde"
#define FOUR TWO *TWO

#define PX printf("X is %d.\n", x)
#define FMT "X is %d.\n"
int main()
{
    int x = TWO;
    PX;
    x = FOUR;
    printf(FMT, x);
    printf("%s\n", OW);
    printf("TWO: OW\n");
    return 0;
}